Rat poison from pot farms poisoning owls, study finds

Rat poison from marijuana farms appears to be sickening and possibly killing owls, fouling wildlife habitat and allowing rodents to spread contamination through large swaths of Northern California's most famous cannabis-growing region, University of California researchers said in a report published Thursday.
Read more: http://www.sfchronicle.com/news/article/Rat-poison-from-pot-farms-poisoning-owls-study-12489063.php?source=Snapzu